Outputs (48)

Altermagnetic lifting of Kramers spin degeneracy (2024)
Journal Article
Krempaský, J., Šmejkal, L., D’Souza, S. W., Hajlaoui, M., Springholz, G., Uhlířová, K., …Jungwirth, T. (2024). Altermagnetic lifting of Kramers spin degeneracy. Nature, 626(7999), 517-522. https://doi.org/10.1038/s41586-023-06907-7

Lifted Kramers spin degeneracy (LKSD) has been among the central topics of condensed-matter physics since the dawn of the band theory of solids1,2. It underpins established practical applications as well as current frontier research, ranging from mag... Read More about Altermagnetic lifting of Kramers spin degeneracy.

Observation of time-reversal symmetry breaking in the band structure of altermagnetic RuO 2 (2024)
Journal Article
Fedchenko, O., Minár, J., Akashdeep, A., D’Souza, S. W., Vasilyev, D., Tkach, O., …Elmers, H. (2024). Observation of time-reversal symmetry breaking in the band structure of altermagnetic RuO 2. Science Advances, 10(5), Article eadj4883. https://doi.org/10.1126/sciadv.adj4883

Altermagnets are an emerging elementary class of collinear magnets. Unlike ferromagnets, their distinct crystal symmetries inhibit magnetization while, unlike antiferromagnets, they promote strong spin polarization in the band structure. The correspo... Read More about Observation of time-reversal symmetry breaking in the band structure of altermagnetic RuO 2.

Saturation of the anomalous Hall effect at high magnetic fields in altermagnetic RuO2 (2023)
Journal Article
Tschirner, T., Keßler, P., Gonzalez Betancourt, R. D., Kotte, T., Kriegner, D., Büchner, B., …Veyrat, L. (2023). Saturation of the anomalous Hall effect at high magnetic fields in altermagnetic RuO2. APL Materials, 11(10), Article 101103. https://doi.org/10.1063/5.0160335

Observations of the anomalous Hall effect in RuO2 and MnTe have demonstrated unconventional time-reversal symmetry breaking in the electronic structure of a recently identified new class of compensated collinear magnets, dubbed altermagnets. While in... Read More about Saturation of the anomalous Hall effect at high magnetic fields in altermagnetic RuO2.

Antiferromagnetic half-skyrmions electrically generated and controlled at room temperature (2023)
Journal Article
Amin, O. J., Poole, S. F., Reimers, S., Barton, L. X., Dal Din, A., Maccherozzi, F., …Wadley, P. (2023). Antiferromagnetic half-skyrmions electrically generated and controlled at room temperature. Nature Nanotechnology, 18(8), 849-853. https://doi.org/10.1038/s41565-023-01386-3

Topologically protected magnetic textures are promising candidates for information carriers in future memory devices, as they can be efficiently propelled at very high velocities using current-induced spin torques. These textures—nanoscale whirls in... Read More about Antiferromagnetic half-skyrmions electrically generated and controlled at room temperature.

Experimental electronic structure of the electrically switchable antiferromagnet CuMnAs (2023)
Journal Article
Linn, A. G., Hao, P., Gordon, K. N., Narayan, D., Berggren, B. S., Speiser, N., …Dessau, D. S. (2023). Experimental electronic structure of the electrically switchable antiferromagnet CuMnAs. npj Quantum Materials, 8(1), Article 19. https://doi.org/10.1038/s41535-023-00554-x

Tetragonal CuMnAs is a room temperature antiferromagnet with an electrically reorientable Néel vector and a Dirac semimetal candidate. Direct measurements of the electronic structure of single-crystalline thin films of tetragonal CuMnAs using angle-r... Read More about Experimental electronic structure of the electrically switchable antiferromagnet CuMnAs.

Spontaneous Anomalous Hall Effect Arising from an Unconventional Compensated Magnetic Phase in a Semiconductor (2023)
Journal Article
Gonzalez Betancourt, R. D., Zubáč, J., Gonzalez-Hernandez, R., Geishendorf, K., Šobáň, Z., Springholz, G., …Kriegner, D. (2023). Spontaneous Anomalous Hall Effect Arising from an Unconventional Compensated Magnetic Phase in a Semiconductor. Physical Review Letters, 130(3), Article 036702. https://doi.org/10.1103/PhysRevLett.130.036702

The anomalous Hall effect, commonly observed in metallic magnets, has been established to originate from the time-reversal symmetry breaking by an internal macroscopic magnetization in ferromagnets or by a noncollinear magnetic order. Here we observe... Read More about Spontaneous Anomalous Hall Effect Arising from an Unconventional Compensated Magnetic Phase in a Semiconductor.

Publisher Correction: An anomalous Hall effect in altermagnetic ruthenium dioxide (2022)
Journal Article
Feng, Z., Zhou, X., Šmejkal, L., Wu, L., Zhu, Z., Guo, H., …Liu, Z. (in press). Publisher Correction: An anomalous Hall effect in altermagnetic ruthenium dioxide. Nature Electronics, https://doi.org/10.1038/s41928-022-00907-7

In the version of this article initially published, square brackets and parentheses were incorrect in Fig. 1g and throughout Fig. 2 (excepting lower labels in Fig. 2d–f). Further, in the second paragraph of the “Consistency with theoretical predictio... Read More about Publisher Correction: An anomalous Hall effect in altermagnetic ruthenium dioxide.

An anomalous Hall effect in altermagnetic ruthenium dioxide (2022)
Journal Article
Feng, Z., Zhou, X., Šmejkal, L., Wu, L., Zhu, Z., Guo, H., …Liu, Z. (2022). An anomalous Hall effect in altermagnetic ruthenium dioxide. Nature Electronics, 5(11), 735-743. https://doi.org/10.1038/s41928-022-00866-z

The anomalous Hall effect is a time-reversal symmetry-breaking magneto-electronic phenomenon originally discovered in ferromagnets. Recently, ruthenium dioxide (RuO2) with a compensated antiparallel magnetic order has been predicted to generate an an... Read More about An anomalous Hall effect in altermagnetic ruthenium dioxide.

Emerging Research Landscape of Altermagnetism (2022)
Journal Article
Šmejkal, L., Sinova, J., & Jungwirth, T. (2022). Emerging Research Landscape of Altermagnetism. Physical Review X, 12(4), Article 040501. https://doi.org/10.1103/physrevx.12.040501

Magnetism is one of the largest, most fundamental, and technologically most relevant fields of condensed-matter physics. Traditionally, two basic magnetic phases have been distinguished ferromagnetism and antiferromagnetism. The spin polarization in... Read More about Emerging Research Landscape of Altermagnetism.

Beyond Conventional Ferromagnetism and Antiferromagnetism: A Phase with Nonrelativistic Spin and Crystal Rotation Symmetry (2022)
Journal Article
Šmejkal, L., Sinova, J., & Jungwirth, T. (2022). Beyond Conventional Ferromagnetism and Antiferromagnetism: A Phase with Nonrelativistic Spin and Crystal Rotation Symmetry. Physical Review X, 12(3), Article 031042. https://doi.org/10.1103/PhysRevX.12.031042

Recent series of theoretical and experimental reports have driven attention to time-reversal symmetry-breaking spintronic and spin-splitting phenomena in materials with collinear-compensated magnetic order incompatible with conventional ferromagnetis... Read More about Beyond Conventional Ferromagnetism and Antiferromagnetism: A Phase with Nonrelativistic Spin and Crystal Rotation Symmetry.